1 appendix b-1. list of impaired waters for connecticut
TRANSCRIPT
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
2
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT1001-00-1-L1_01
Wyassup Lake (North Stonington) Fish Consumption MERCURY
CT2000-30_01
Fenger Brook (Waterford)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT2101-01_01
Wheeler Brook (Stonington)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT2101-03_01
Donahue Brook (Stonington)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT2202-00_01
Latimer Brook (East Lyme)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT2204-03_01
Stony Brook (Waterford)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT2205-02-1-L1_01
Dodge Pond (East Lyme) Fish Consumption MERCURY
CT3002-02-1-L2_01
Amos Lake (Preston) Recreation ALGAE
CT3002-02-1-L2_01
Amos Lake (Preston) Recreation CHLOROPHYLL-A
CT3002-02-1-L2_01
Amos Lake (Preston) Recreation NUTRIENTS
CT3004-00_01
Oxoboxo Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
3
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT3006-00_01
Hunts Brook (Waterford)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT3100-00_05
Willimantic River (Tolland/Willington/Ellington/Stafford)-05
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT3100-00_05
Willimantic River (Tolland/Willington/Ellington/Stafford)-05 Recreation
ESCHERICHIA COLI (E. COLI)
CT3207-12_01
Roberts Brook (Mansfield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT3208-00_01
Sawmill Brook (Mansfield)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT3208-02_01
Conantville Brook (Mansfield)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT3300-10_01
Quinatissett Brook (Thompson)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT3700-00_01
Quinebaug River (Lisbon/Griswold)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT3700-00_04
Quinebaug River (Putnam)-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT3700-00_05
Quinebaug River (Putnam/Thompson)-05
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT3700-00_05
Quinebaug River (Putnam/Thompson)-05
Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
4
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT3700-00-2+L1_01
West Thompson Lake (Thompson) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE
CT3700-00-2+L1_01
West Thompson Lake (Thompson) Habitat for Fish, Other Aquatic Life and Wildlife CHLOROPHYLL-A
CT3700-00-2+L1_01
West Thompson Lake (Thompson) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
CT3700-00-2+L1_01
West Thompson Lake (Thompson) Recreation ALGAE
CT3700-00-2+L1_01
West Thompson Lake (Thompson) Recreation CHLOROPHYLL-A
CT3700-00-2+L1_01
West Thompson Lake (Thompson) Recreation NUTRIENTS
CT3700-00-5+L4_01
Aspinook Pond (Canterbury/Griswold/Lisbon)
Recreation ALGAE
CT3700-00-5+L4_01
Aspinook Pond (Canterbury/Griswold/Lisbon)
Recreation CHLOROPHYLL-A
CT3700-00-5+L4_01
Aspinook Pond (Canterbury/Griswold/Lisbon)
Recreation NUTRIENTS
CT3700-17_01
Durkee Brook (Pomfret)-01 Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
5
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT3708-00_01
Little River (Putnam/Woodstock)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT3708-00-1-L1_01
Roseland Lake (Woodstock) Recreation NUTRIENTS
CT3708-18_01
Wheatons Brook (Putnam/Thompson)-01
Recreation ESCHERICHIA COLI (E. COLI)
CT3709-00_01
Wappaquoia Brook-01 Recreation ESCHERICHIA COLI (E. COLI)
CT3709-02_01
Day Brook (Pomfret)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT3800-00_01
Shetucket River (Norwich)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT3800-00-6+L3_01
Spaulding Pond (Norwich) Recreation ESCHERICHIA COLI (E. COLI)
CT3805-00_02
Little River (Sprague)-02 Fish Consumption MERCURY
CT3805-00_02
Little River (Sprague)-02 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT3805-00_02
Little River (Sprague)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT3805-00_02
Little River (Sprague)-02 Habitat for Fish, Other Aquatic Life and Wildlife WHOLE EFFLUENT TOXICITY (WET)
CT3805-00-3-L6_01
Papermill Pond (Sprague) Fish Consumption MERCURY
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
6
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT3805-00-3-L6_01
Papermill Pond (Sprague) Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT3805-00-3-L7_01
Versailles Pond (Sprague) Fish Consumption MERCURY
CT3805-00-3-L7_01
Versailles Pond (Sprague) Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT3805-00-3-L7_01
Versailles Pond (Sprague) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
CT3900-00_trib_01
Unnamed Trib, Yantic River (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife AMMONIA, UN-IONIZED
CT3900-00_trib_01
Unnamed Trib, Yantic River (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife COPPER
CT3900-00_trib_01
Unnamed Trib, Yantic River (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife DISSOLVED OXYGEN
CT3900-00_trib_01
Unnamed Trib, Yantic River (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife LEAD
CT3900-00_trib_01
Unnamed Trib, Yantic River (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
7
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT3900-00_trib_01
Unnamed Trib, Yantic River (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife ORGANIC ENRICHMENT (SEWAGE) BIOLOGICAL INDICATORS
CT3900-00-UL_pond_01
Browning Pond (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife AMMONIA, UN-IONIZED
CT3900-00-UL_pond_01
Browning Pond (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife COPPER
CT3900-00-UL_pond_01
Browning Pond (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife DISSOLVED OXYGEN
CT3900-00-UL_pond_01
Browning Pond (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife LEAD
CT3900-00-UL_pond_01
Browning Pond (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
CT3900-00-UL_pond_01
Browning Pond (Norwich Landfill)-01
Habitat for Fish, Other Aquatic Life and Wildlife ORGANIC ENRICHMENT (SEWAGE) BIOLOGICAL INDICATORS
CT3900-07_01
Kahn Brook (Bozrah)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
8
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT3900-07_01
Kahn Brook (Bozrah)-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT3900-07_01
Kahn Brook (Bozrah)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT3902-00_02
Bartlett Brook (Lebanon)-02 Recreation ESCHERICHIA COLI (E. COLI)
CT3905-00_01a
Pease Brook (Bozrah/Franklin/Lebanon)-01a
Recreation ESCHERICHIA COLI (E. COLI)
CT3907-00_01
Susquetonscut Brook-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4000-00_01
Connecticut River-01 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT4000-00_02
Connecticut River-02 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT4000-00_02
Connecticut River-02 Recreation ESCHERICHIA COLI (E. COLI)
CT4000-00_03
Connecticut River (Portland/Suffield)-03
Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT4004-02_01
Farm Brook (South Windsor)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4013-00_02
Sumner Brook (Middletown)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4013-05-1-L1_01
Crystal Lake (Middletown) Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
9
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4100-00_01
Stony Brook (Suffield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4100-00_03
Stony Brook (Suffield)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4101-00_01
Muddy Brook (Suffield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4200-00_01
Scantic River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4200-00_01
Scantic River-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4200-00_02
Scantic River-02 Recreation ESCHERICHIA COLI (E. COLI)
CT4200-00_03
Scantic River-03 Recreation ESCHERICHIA COLI (E. COLI)
CT4200-15_01
Thrasher Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4200-28_01
Dry Brook (South Windsor/East Windsor)-01
Recreation ESCHERICHIA COLI (E. COLI)
CT4202-00_01
Gillettes Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4203-00_01
Gulf Stream (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4204-00_01
Abbey Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
10
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4206-00_01
Broad Brook (East Windsor)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4206-00_02
Broad Brook (East Windsor-Ellington)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4300-00_01
Farmington River (Windsor)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4300-00_02
Farmington River (Bloomfield/Farmington)-02
Recreation ESCHERICHIA COLI (E. COLI)
CT4300-32_01
Minister Brook (Simsbury)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT4300-54_01
Phelps Brook (Windsor)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4303-00_03
Still River (Winsted)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4308-00-1-L2_01
Compensating Res. (L. McDonough) (Barkhamsted/New Hartford)
Fish Consumption MERCURY
CT4309-00_01
Cherry Brook (Canton)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4311-00_01
Burlington Brook (Burlington)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4312-00_01
Roaring Brook (Farmington)-01 Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
11
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4314-00_01
Coppermine Brook (Bristol)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4315-00_01
Pequabuck River (Plainville)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4315-00_01
Pequabuck River (Plainville)-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT4315-00_02
Pequabuck River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4315-00_02
Pequabuck River-02 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT4315-00_03
Pequabuck River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4315-00_03
Pequabuck River-03 Habitat for Fish, Other Aquatic Life and Wildlife ZINC
CT4315-00_05
Pequabuck River-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4315-00_05
Pequabuck River-05 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
12
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4315-00_06
Pequabuck River-06 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4318-00_01
Hop Brook (Simsbury)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4321-00_01
Mill Brook (Windsor/Bloomfield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4400-01_01
South Branch Park River (Hartford)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4400-01_02
South Branch Park River (Hartford)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4402-00_02
Piper Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4402-00_02
Piper Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT4403-00_01
Trout Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4403-00_02
Trout Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4403-00_03
Trout Brook-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
13
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4404-00_02
North Branch Park River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00_01
Hockanum River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00_02
Hockanum River (East Hartford/Manchester)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00_03
Hockanum River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00_04a
Hockanum River-04a Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00_04b
Hockanum river-04b Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00_05
Hockanum River-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00_05
Hockanum River-05 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT4500-00_06a
Hockanum River-06a Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
14
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4500-00_06b
Hockanum River (Vernon/Rockville)-06b
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00_08
Hockanum river-08 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-00-3-L3_01
Union Pond (Manchester) Fish Consumption CHLORDANE
CT4500-00-3-L3_01
Union Pond (Manchester) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE
CT4500-00-3-L3_01
Union Pond (Manchester) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
CT4500-00-3-L3_01
Union Pond (Manchester) Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION
CT4500-04_01
Ogden Brook (Vernon)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4500-12_02
Lydall Brook (Manchester)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4503-00_01
Tankerhoosen River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
15
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4504-00_01
South Fork Hockanum River (Manchester)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4600-00_02
Mattabesset River (Cromwell/East Berlin)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4600-00_02
Mattabesset River (Cromwell/East Berlin)-02
Recreation ESCHERICHIA COLI (E. COLI)
CT4600-00_03
Mattabesset River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4600-00_03
Mattabesset River-03 Recreation ESCHERICHIA COLI (E. COLI)
CT4600-00_04
Mattabesset River-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4600-00_04
Mattabesset River-04 Recreation ESCHERICHIA COLI (E. COLI)
CT4600-00_05
Mattabesset River-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4600-00_06
Mattabesset River-06 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4600-00_06
Mattabesset River-06 Recreation ESCHERICHIA COLI (E. COLI)
CT4600-00-trib_01
Unnamed tributary Connecticut River (Cromwell)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
16
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4601-00_01
Belcher Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4601-00-1-L2_01
Silver Lake (Berlin/Meriden) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
CT4601-00-1-L2_01
Silver Lake (Berlin/Meriden) Habitat for Fish, Other Aquatic Life and Wildlife TURBIDITY
CT4601-02_01
Hatchery Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4602-00_01
Willow Brook (New Britain)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4602-00_01
Willow Brook (New Britain)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4603-00_01
Webster Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4603-00_01
Webster Brook-01 Recreation ESCHERICHIA COLI (E. COLI)
CT4607-00_01
Coginchaug River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4607-10-1-L1_01
Beseck Lake (Middlefield) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
17
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4607-10-1-L1_01
Beseck Lake (Middlefield) Habitat for Fish, Other Aquatic Life and Wildlife CHLOROPHYLL-A
CT4607-10-1-L1_01
Beseck Lake (Middlefield) Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT4607-10-1-L1_01
Beseck Lake (Middlefield) Recreation ALGAE
CT4607-10-1-L1_01
Beseck Lake (Middlefield) Recreation CHLOROPHYLL-A
CT4607-10-1-L1_01
Beseck Lake (Middlefield) Recreation PHOSPHORUS, TOTAL
CT4703-01_01a
Cabin Brook (Colchester)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4707-12_01
Lyman Brook (Marlborough)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4709-04_02
Pocotopaug Creek (East Hampton)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT4709-04-1-L1_01
Pocotopaug Lake (East Hampton) Recreation ALGAE
CT4709-04-1-L1_01
Pocotopaug Lake (East Hampton) Recreation CHLOROPHYLL-A
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
18
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT4709-04-1-L1_01
Pocotopaug Lake (East Hampton) Recreation NUTRIENTS
CT5000-55_01
Unnamed trib to Oyster River (Milford)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5000-55_02
Unnamed trib to Oyster River (Milford)-02
Habitat for Fish, Other Aquatic Life and Wildlife MERCURY
CT5102-02_02
Spring Lot Brook (Westbrook)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5105-00_04
Chatfield Hollow Brook (Killingworth)-04
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5111-00_02
Branford River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5111-09-2-L3_01
Branford Supply Pond, Northwest (Branford)
Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION
CT5111-09-2-L3_01
Branford Supply Pond, Northwest (Branford)
Habitat for Fish, Other Aquatic Life and Wildlife TOTAL SUSPENDED SOLIDS (TSS)
CT5111-09-2-L3_01
Branford Supply Pond, Northwest (Branford)
Habitat for Fish, Other Aquatic Life and Wildlife TURBIDITY
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
19
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT5112-00_01
Farm River (East Haven)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5112-00_02
Farm River (North Branford)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5112-10_01
Burrs Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife SODIUM
CT5112-10_01
Burrs Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife TURBIDITY
CT5200-00_01
Quinnipiac River (North Haven/Wallingford)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5200-00_02
Quinnipiac River (North Haven/Meriden)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5200-00_02
Quinnipiac River (North Haven/Meriden)-02
Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT5200-00_03
Quinnipiac River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5200-00_04
Quinnipiac River-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
20
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT5200-00_04
Quinnipiac River-04 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT5200-00_05
Quinnipiac River-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5200-00_05
Quinnipiac River-05 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT5200-00_06
Quinnipiac River-06 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5200-00_07
Quinnipiac River-07 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5200-00-4-L2_01
Hanover Pond (Meriden) Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT5200-00-4-L2_01
Hanover Pond (Meriden) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
CT5200-00-4-L2_01
Hanover Pond (Meriden) Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION
CT5200-00-4-L2_01
Hanover Pond (Meriden) Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
21
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT5200-02_01
Patton Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5200-10_01
Meetinghouse Brook (Wallingford)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5200-23_01
Hemingway Creek-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5202-00_01
Tenmile River (Southington/Cheshire)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5203-00_01
Misery Brook (Southington)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5205-00_01
Sodom Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5206-00_01
Harbor Brook (Meriden)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5206-00_03
Harbor Brook (Meriden)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5206-01_01
Spoon Shop Brook (Meriden)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
22
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT5206-01_01
Spoon Shop Brook (Meriden)-01 Habitat for Fish, Other Aquatic Life and Wildlife ESCHERICHIA COLI (E. COLI)
CT5206-01_01
Spoon Shop Brook (Meriden)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT5206-02_01
Willow Brook (Meriden)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5207-00_01
Wharton Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5207-00_02
Wharton Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5207-01_01
Unnamed Tributary to Wharton Brook (Wallingford)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5208-00_02a
Muddy River (North Haven)-02a Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5208-00_02a
Muddy River (North Haven)-02a Recreation ESCHERICHIA COLI (E. COLI)
CT5301-00_01
Willow Brook (Hamden)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT5302-00_03
Mill River (Cheshire)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5304-00_01
Wintergreen Brook (New Haven)-01 Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
23
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT5305-00_01
West River (New Haven/Woodbridge)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5306-00_02
Indian River (Orange)-02 Recreation ESCHERICHIA COLI (E. COLI)
CT5306-01_01
Silver Brook (Orange)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT5306-01_01
Silver Brook (Orange)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT5306-01_02
Silver Brook (Orange)-02 Recreation ESCHERICHIA COLI (E. COLI)
CT6000-00_01
Housatonic River (Orange/Shelton/Derby)-01
Recreation ESCHERICHIA COLI (E. COLI)
CT6000-00_02
Housatonic River (Shelton/Derby)-02
Recreation ESCHERICHIA COLI (E. COLI)
CT6000-00_04
Housatonic River-04 Recreation ESCHERICHIA COLI (E. COLI)
CT6000-00-5+L1_01
Lillinonah, Lake (Newtown/Southbury/Bridgewater/Brookfield)
Recreation ALGAE
CT6000-00-5+L1_01
Lillinonah, Lake (Newtown/Southbury/Bridgewater/Brookfield)
Recreation CHLOROPHYLL-A
CT6000-00-5+L1_01
Lillinonah, Lake (Newtown/Southbury/Bridgewater/Brookfield)
Recreation FLOATING DEBRIS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
24
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6000-00-5+L1_01
Lillinonah, Lake (Newtown/Southbury/Bridgewater/Brookfield)
Recreation NUTRIENTS
CT6000-00-5+L1_01
Lillinonah, Lake (Newtown/Southbury/Bridgewater/Brookfield)
Recreation TASTE
CT6000-00-5+L2_01
Zoar, Lake (Monroe/Newtown/Oxford/Southbury)
Recreation ALGAE
CT6000-00-5+L2_01
Zoar, Lake (Monroe/Newtown/Oxford/Southbury)
Recreation CHLOROPHYLL-A
CT6000-00-5+L2_01
Zoar, Lake (Monroe/Newtown/Oxford/Southbury)
Recreation NUTRIENTS
CT6000-00-5+L2_02
Zoar, Lake (Newtown/Southbury) Recreation ALGAE
CT6000-00-5+L2_02
Zoar, Lake (Newtown/Southbury) Recreation CHLOROPHYLL-A
CT6000-00-5+L2_02
Zoar, Lake (Newtown/Southbury) Recreation NUTRIENTS
CT6000-00-5+L4_01
Housatonic Lake (Shelton/Derby/Seymour/Oxford/Monroe)
Recreation ALGAE
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
25
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6000-00-5+L4_01
Housatonic Lake (Shelton/Derby/Seymour/Oxford/Monroe)
Recreation CHLOROPHYLL-A
CT6000-00-5+L4_01
Housatonic Lake (Shelton/Derby/Seymour/Oxford/Monroe)
Recreation NUTRIENTS
CT6000-77_01
Twomile Brook (Derby/Orange)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6000-88-1-L1_01
Brewsters Pond (Stratford) Fish Consumption CHLORDANE
CT6000-88-1-L1_01
Brewsters Pond (Stratford) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE
CT6000-88-1-L1_01
Brewsters Pond (Stratford) Habitat for Fish, Other Aquatic Life and Wildlife DISSOLVED OXYGEN
CT6000-88-1-L1_01
Brewsters Pond (Stratford) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
CT6004-00_01
Konkapot River-01 Fish Consumption MERCURY
CT6005-00_01
Factory Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6005-00_01
Factory Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
26
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6008-00_02b
Mill Brook (Cornwall)-02b Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6014-00_01
Bog Hollow Brook (Kent)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT6016-00-1-L3_01
Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE
CT6016-00-1-L3_01
Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife CHLOROPHYLL-A
CT6016-00-1-L3_01
Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife DISSOLVED OXYGEN
CT6016-00-1-L3_01
Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS
CT6016-00-1-L3_01
Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION
CT6016-00-1-L3_01
Hatch Pond (Kent) Recreation ALGAE
CT6016-00-1-L3_01
Hatch Pond (Kent) Recreation CHLOROPHYLL-A
CT6016-00-1-L3_01
Hatch Pond (Kent) Recreation NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
27
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6016-00-1-L3_01
Hatch Pond (Kent) Recreation SEDIMENTATION/SILTATION
CT6019-00-trib_01
Unnamed tributary Deep Brook (Newtown)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6025-00_04
Farmill River-04 Recreation ESCHERICHIA COLI (E. COLI)
CT6026-03_01
Cemetery Pond Brook (Stratford/Shelton)-01
Recreation ESCHERICHIA COLI (E. COLI)
CT6100-00_01
Blackberry River (North Canaan)-01 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT6100-00_02a
Blackberry River (North Canaan)-02a
Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT6100-00_02b
Blackberry River (North Canaan)-02b
Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT6402-00_01
Ball Pond Brook (New Fairfield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6402-00_01
Ball Pond Brook (New Fairfield)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT6402-00-1-L1_01
Ball Pond (New Fairfield) Recreation ALGAE
CT6402-00-1-L1_01
Ball Pond (New Fairfield) Recreation CHLOROPHYLL-A
CT6402-00-1-L1_01
Ball Pond (New Fairfield) Recreation NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
28
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6502-00-1-L2_01
Waramaug, Lake (Kent/Warren/Washington)
Recreation ALGAE
CT6502-00-1-L2_01
Waramaug, Lake (Kent/Warren/Washington)
Recreation CHLOROPHYLL-A
CT6502-00-1-L2_01
Waramaug, Lake (Kent/Warren/Washington)
Recreation NUTRIENTS
CT6600-00_01
Still River (New Milford/Brookfield)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6600-00_02
Still River (Brookfield/Danbury)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6600-00_02
Still River (Brookfield/Danbury)-02 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT6600-00_03
Still River (Danbury)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6600-00_03
Still River (Danbury)-03 Recreation ESCHERICHIA COLI (E. COLI)
CT6600-00_04
Still River (Danbury)-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6600-00_05
Still River (Danbury)-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
29
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6600-00_05
Still River (Danbury)-05 Recreation ESCHERICHIA COLI (E. COLI)
CT6603-00_01
Padanaram Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6603-00_01
Padanaram Brook-01 Recreation ESCHERICHIA COLI (E. COLI)
CT6604-00_01
Sympaug Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6604-00_01
Sympaug Brook-01 Recreation ESCHERICHIA COLI (E. COLI)
CT6705-00-3-L3_01
Bantam Lake (Litchfield/Morris) Recreation ALGAE
CT6705-00-3-L3_01
Bantam Lake (Litchfield/Morris) Recreation CHLOROPHYLL-A
CT6705-00-3-L3_01
Bantam Lake (Litchfield/Morris) Recreation NUTRIENTS
CT6806-00_01
Transylvania Brook (Southbury)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT6900-00_01
Naugatuck River (Derby/Seymour)-01
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6900-00_02
Naugatuck River (Seymour/Waterbury)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
30
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6900-00_02
Naugatuck River (Seymour/Waterbury)-02
Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT6900-00_03
Naugatuck River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6900-00_04
Naugatuck River-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6900-00_06
Naugatuck River-06 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6900-00_07
Naugatuck River-07 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6900-00_07
Naugatuck River-07 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT6900-00_08
Naugatuck River-08 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6904-00_01
West Branch Naugatuck River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6905-00_01
East Branch Naugatuck River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
31
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6910-00_01
Branch Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6911-00_01
Hancock Brook (Waterbury)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6911-05_01
Todd Hollow Brook (Plymouth)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6912-00_02
Steele Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6912-00_02
Steele Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife IRON
CT6914-00_01
Mad River (Waterbury)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6914-00_02
Mad River (Waterbury)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6914-00_03a
Mad River (Waterbury)-03a Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6916-00_01
Hop Brook (Naugatuck)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
32
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT6916-00-3-L4_01
Hop Brook Lake (Waterbury/Middlebury)
Recreation ESCHERICHIA COLI (E. COLI)
CT6917-00_01
Long Meadow Pond Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6919-00_01
Bladens River (Seymour)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT6919-00_01
Bladens River (Seymour)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT7000-16_01
Muddy Brook (Westport)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7000-16_01
Muddy Brook (Westport)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT7000-16-trib_01
Unnamed tributary, Muddy Brook (Westport)-01
Recreation ESCHERICHIA COLI (E. COLI)
CT7000-17_01
Unnamed trib, Muddy Brook (Westport)-01
Recreation ESCHERICHIA COLI (E. COLI)
CT7000-18_01
Unnamed trib, Sherwood Millpond LIS (Westport)-01
Recreation ESCHERICHIA COLI (E. COLI)
CT7000-22_01
Indian River (Westport)-01 Recreation IRON
CT7000-22_02
Indian River (Westport)-02 Recreation IRON
CT7000-29_01
Unnamed trib to Farm Creek LIS (Norwalk)-01
Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
33
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT7102-00_01
Bruce Brook (Bridgeport/Stratford)-01
Recreation ESCHERICHIA COLI (E. COLI)
CT7102-00_02
Bruce Brook (Bridgeport/Stratford)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7102-00_03
Bruce Brook (Stratford)-03 Recreation ESCHERICHIA COLI (E. COLI)
CT7103-00-2-L3_01
Success Lake (Bridgeport) Habitat for Fish, Other Aquatic Life and Wildlife LEAD
CT7103-00-2-L3_01
Success Lake (Bridgeport) Habitat for Fish, Other Aquatic Life and Wildlife MERCURY
CT7103-00-2-L4_01
Stillman Pond (Bridgeport) Fish Consumption CADMIUM
CT7103-00-2-L4_01
Stillman Pond (Bridgeport) Fish Consumption LEAD
CT7103-00-2-L4_01
Stillman Pond (Bridgeport) Fish Consumption MERCURY
CT7103-00-2-L4_01
Stillman Pond (Bridgeport) Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT7103-00-2-L5_01
Pembroke Lakes (Bridgeport) Habitat for Fish, Other Aquatic Life and Wildlife LEAD
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
34
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT7103-00-2-L5_01
Pembroke Lakes (Bridgeport) Habitat for Fish, Other Aquatic Life and Wildlife POLYCHLORINATED BIPHENYLS (PCBS)
CT7105-00_01
Pequonnock River (Bridgeport)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7105-00_02
Pequonnock River (Bridgeport/Trumbull)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7105-00_03
Pequonnock River (Trumbull)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7106-02_01
Horse Tavern Brook (Fairfield/Trumbull)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7107-00_01
Cricker Brook (Fairfield)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT7108-00_01
Mill River (Fairfield)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7108-05_02
Unnamed tributary, Easton Reservoir (Snow Farm)-02
Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7109-00_01
Sasco Brook (Westport/Fairfield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7200-00_01
Saugatuck River-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7200-29_01
Deadman Brook (Westport/Fairfield)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7201-00_01
Little River (Redding)-01 Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
35
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT7203-00_01
West Branch Saugatuck River-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7300-00_01
Norwalk River (Norwalk/Wilton)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7300-00_01
Norwalk River (Norwalk/Wilton)-01 Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION
CT7300-00_05
Norwalk River (Ridgefield)-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7300-00_05
Norwalk River (Ridgefield)-05 Recreation ESCHERICHIA COLI (E. COLI)
CT7300-02_01
Ridgefield Brook (Ridgefield)-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT7300-02_02
Ridgefield Brook (Ridgefield)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7300-02_02
Ridgefield Brook (Ridgefield)-02 Recreation ESCHERICHIA COLI (E. COLI)
CT7300-07_01
Cooper Pond Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7300-07_02
Cooper Pond Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7301-00_01
Comstock Brook (Wilton)-01 Recreation ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
36
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT7301-00_02
Comstock Brook (Wilton)-02 Recreation
ESCHERICHIA COLI (E. COLI)
CT7302-00_01
Silvermine River (Norwalk)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7302-13_01
Belden Hill Brook (Wilton)-01 Recreation ESCHERICHIA COLI (E. COLI)
CT7401-00_01
Fivemile River (New Canaan)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7401-00_01
Fivemile River (New Canaan)-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL
CT7401-00_02
Fivemile River (New Canaan)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7401-00_03
Fivemile River (New Canaan)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7401-00_03
Fivemile River (New Canaan)-03 Recreation ESCHERICHIA COLI (E. COLI)
CT7401-00_04
Fivemile River (New Canaan)-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7402-01_01
Goodwives River (Darien)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7403-00_01
Noroton River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
37
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT7403-00_01
Noroton River-01 Recreation ESCHERICHIA COLI (E. COLI)
CT7403-00_02
Noroton River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7403-00_02
Noroton River-02 Recreation ESCHERICHIA COLI (E. COLI)
CT7403-00_03
Noroton River-03 Recreation ESCHERICHIA COLI (E. COLI)
CT7405-00_01
Rippowam River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7405-00_01
Rippowam River-01 Recreation ESCHERICHIA COLI (E. COLI)
CT7405-00_02
Rippowam River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7407-00_02
Mianus River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7408-00_01
Greenwich Creek (Greenwich)-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7409-00_01
Horseneck Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT7409-00_01
Horseneck Brook-01 Recreation
ESCHERICHIA COLI (E. COLI)
CT7409-00_02
Horseneck Brook-01 Recreation
ESCHERICHIA COLI (E. COLI)
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
38
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT7411-00_01
Byram River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN
CT8104-00-2-L5_01
Mamanasco Lake (Ridgefield) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE
CT8104-00-2-L5_01
Mamanasco Lake (Ridgefield) Recreation ALGAE
CT-C1_002-SB
LIS CB Inner - Inner Clinton Harbor, Clinton
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_002-SB
LIS CB Inner - Inner Clinton Harbor, Clinton
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C1_011 LIS CB Inner - Farm River, East Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN, TOTAL NITROGEN, NUTRIENTS
CT-C1_012 LIS CB Inner - Morris Creek, East Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_012 LIS CB Inner - Morris Creek, East Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C1_012 LIS CB Inner - Morris Creek, East Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
39
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-C1_012 LIS CB Inner - Morris Creek, East Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C1_013-SB
LIS CB Inner - New Haven Harbor, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_013-SB
LIS CB Inner - New Haven Harbor, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C1_013-SB
LIS CB Inner - New Haven Harbor, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
CT-C1_013-SB
LIS CB Inner - New Haven Harbor, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C1_014-SB
LIS CB Inner - Quinnipiac River (mouth), New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_014-SB
LIS CB Inner - Quinnipiac River (mouth), New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C1_014-SB
LIS CB Inner - Quinnipiac River (mouth), New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
CT-C1_014-SB
LIS CB Inner - Quinnipiac River (mouth), New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C1_014-SB
LIS CB Inner - Quinnipiac River (mouth), New Haven
Recreation ENTEROCOCCUS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
40
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-C1_015-SB
LIS CB Inner - West River (Lower), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_015-SB
LIS CB Inner - West River (Lower), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C1_015-SB
LIS CB Inner - West River (Lower), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
CT-C1_015-SB
LIS CB Inner - West River (Lower), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C1_015-SB
LIS CB Inner - West River (Lower), West Haven
Recreation ENTEROCOCCUS
CT-C1_016 LIS CB Inner - Cove River, West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_016 LIS CB Inner - Cove River, West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C1_016 LIS CB Inner - Cove River, West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C1_017 LIS CB Inner - Oyster River, Milford Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_017 LIS CB Inner - Oyster River, Milford Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
41
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-C1_017 LIS CB Inner - Oyster River, Milford Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C1_019-SB
LIS CB Inner - Housatonic River (mouth), Milford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
COPPER
CT-C1_019-SB
LIS CB Inner - Housatonic River (mouth), Milford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DIOXIN (INCLUDING 2,3,7,8-TCDD)
CT-C1_019-SB
LIS CB Inner - Housatonic River (mouth), Milford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C1_019-SB
LIS CB Inner - Housatonic River (mouth), Milford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ZINC
CT-C1_021-SB
LIS CB Inner - Housatonic River (Upper), Orange
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_021-SB
LIS CB Inner - Housatonic River (Upper), Orange
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C1_022 LIS CB Inner - West River (Upper), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_022 LIS CB Inner - West River (Upper), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
42
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-C1_022 LIS CB Inner - West River (Upper), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
CT-C1_022 LIS CB Inner - West River (Upper), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C1_022 LIS CB Inner - West River (Upper), West Haven
Recreation ENTEROCOCCUS
CT-C1_022 LIS CB Inner - West River (Upper), West Haven
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-C1_023-SB
LIS CB Inner - Mill River (mouth), New Haven/Hamden
Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
CT-C1_023-SB
LIS CB Inner - Mill River (mouth), New Haven/Hamden
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C1_023-SB
LIS CB Inner - Mill River (mouth), New Haven/Hamden
Recreation ENTEROCOCCUS
CT-C2_001 LIS CB Shore - Westbrook Harbor (East), Westbrook
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-C2_015-SB
LIS CB Shore - Pages Cove, Branford Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN, TOTAL NITROGEN, NUTRIENTS
CT-C2_017-SB
LIS CB Shore - Morris Cove, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
43
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-C2_017-SB
LIS CB Shore - Morris Cove, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C2_017-SB
LIS CB Shore - Morris Cove, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
CT-C2_017-SB
LIS CB Shore - Morris Cove, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C2_018-SB
LIS CB Shore - New Haven Harbor (West), West Haven
Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
CT-C2_018-SB
LIS CB Shore - New Haven Harbor (West), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C2_018-SB
LIS CB Shore - New Haven Harbor (West), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
CT-C2_018-SB
LIS CB Shore - New Haven Harbor (West), West Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C2_018-SB
LIS CB Shore - New Haven Harbor (West), West Haven
Recreation ENTEROCOCCUS
CT-C2_021 LIS CB Shore - Bayview, Milford Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-C2_024-SB
LIS CB Shore - Housatonic River mouth, Stratford
Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
44
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-C2_024-SB
LIS CB Shore - Housatonic River mouth, Stratford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
COPPER
CT-C2_024-SB
LIS CB Shore - Housatonic River mouth, Stratford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DIOXIN (INCLUDING 2,3,7,8-TCDD)
CT-C2_024-SB
LIS CB Shore - Housatonic River mouth, Stratford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
LEAD
CT-C2_024-SB
LIS CB Shore - Housatonic River mouth, Stratford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C2_024-SB
LIS CB Shore - Housatonic River mouth, Stratford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ZINC
CT-C3_005 LIS CB Midshore - Madison Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-C3_015-SB
LIS CB Midshore - New Haven Harbor, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C3_015-SB
LIS CB Midshore - New Haven Harbor, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C3_015-SB
LIS CB Midshore - New Haven Harbor, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
45
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-C3_015-SB
LIS CB Midshore - New Haven Harbor, New Haven
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-C3_016 LIS CB Midshore - West Haven Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-C3_016 LIS CB Midshore - West Haven Habitat for Marine Fish, Other Aquatic Life and Wildlife
NITROGEN, TOTAL
CT-C3_016 LIS CB Midshore - West Haven Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-C3_016 LIS CB Midshore - West Haven Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-E1_001-SB
LIS EB Inner - Pawcatuck River (01), Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E1_001-SB
LIS EB Inner - Pawcatuck River (01), Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-E1_001-SB
LIS EB Inner - Pawcatuck River (01), Stonington
Recreation ENTEROCOCCUS
CT-E1_002-SB
LIS EB Inner - Pawcatuck River (02), Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ALGAE
CT-E1_002-SB
LIS EB Inner - Pawcatuck River (02), Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
46
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-E1_002-SB
LIS EB Inner - Pawcatuck River (02), Stonington
Recreation ALGAE
CT-E1_002-SB
LIS EB Inner - Pawcatuck River (02), Stonington
Recreation ESTUARINE BIOASSESSMENTS
CT-E1_003 LIS EB Inner - Inner Wequetequock Cove, Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ALGAE
CT-E1_003 LIS EB Inner - Inner Wequetequock Cove, Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E1_003 LIS EB Inner - Inner Wequetequock Cove, Stonington
Recreation ALGAE
CT-E1_003 LIS EB Inner - Inner Wequetequock Cove, Stonington
Recreation ESTUARINE BIOASSESSMENTS
CT-E1_007-SB
LIS EB Inner - Mystic River (Mouth), Stonington
Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
CT-E1_014-SB
LIS EB Inner - Thames River (Mouth), New London
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E1_014-SB
LIS EB Inner - Thames River (Mouth), New London
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E1_015-SB
LIS EB Inner - Thames River (middle), Ledyard
Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
47
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-E1_015-SB
LIS EB Inner - Thames River (middle), Ledyard
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E1_015-SB
LIS EB Inner - Thames River (middle), Ledyard
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E1_015-SB
LIS EB Inner - Thames River (middle), Ledyard
Recreation ENTEROCOCCUS
CT-E1_016-SB
LIS EB Inner - Thames River (Upper), Norwich
Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
CT-E1_016-SB
LIS EB Inner - Thames River (Upper), Norwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E1_016-SB
LIS EB Inner - Thames River (Upper), Norwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E1_016-SB
LIS EB Inner - Thames River (Upper), Norwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-E1_016-SB
LIS EB Inner - Thames River (Upper), Norwich
Recreation ENTEROCOCCUS
CT-E1_020 LIS EB Inner - Niantic River (mouth), Niantic
Habitat for Marine Fish, Other Aquatic Life and Wildlife
CAUSE UNKNOWN
CT-E1_020 LIS EB Inner - Niantic River (mouth), Niantic
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
48
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-E1_020 LIS EB Inner - Niantic River (mouth), Niantic
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-E1_022 LIS EB Inner - Bride Brook, East Lyme
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-E1_024-SB
LIS EB Inner - Connecticut River (mouth), Old Lyme
Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT-E1_027-SB
LIS EB Inner - Duck River, Old Lyme Recreation ENTEROCOCCUS
CT-E1_028-SB
LIS EB Inner - Lieutenant River, Old Lyme
Recreation ENTEROCOCCUS
CT-E1_029-SB
LIS EB Inner - Connecticut River (Lower), Essex
Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT-E1_031-SB
LIS EB Inner - Connecticut River (upper), Chester
Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS)
CT-E1_033 LIS EB Inner - Pequotsepos Cove, Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E1_033 LIS EB Inner - Pequotsepos Cove, Stonington
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-E2_001 LIS EB Shore - Wequetequock Cove, Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ALGAE
CT-E2_001 LIS EB Shore - Wequetequock Cove, Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
49
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-E2_001 LIS EB Shore - Wequetequock Cove, Stonington
Recreation ALGAE
CT-E2_001 LIS EB Shore - Wequetequock Cove, Stonington
Recreation ESTUARINE BIOASSESSMENTS
CT-E2_002 LIS EB Shore - Stonington Point, Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ALGAE
CT-E2_002 LIS EB Shore - Stonington Point, Stonington
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E2_002 LIS EB Shore - Stonington Point, Stonington
Recreation ALGAE
CT-E2_002 LIS EB Shore - Stonington Point, Stonington
Recreation ESTUARINE BIOASSESSMENTS
CT-E2_009-SB
LIS EB Shore - Thames River Mouth (East), Groton
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E2_009-SB
LIS EB Shore - Thames River Mouth (East), Groton
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E2_009-SB
LIS EB Shore - Thames River Mouth (East), Groton
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-E2_010-SB
LIS EB Shore - Thames Rvr Mouth (West), New London
Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
50
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-E2_010-SB
LIS EB Shore - Thames Rvr Mouth (West), New London
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E2_010-SB
LIS EB Shore - Thames Rvr Mouth (West), New London
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E2_011-SB
LIS EB Shore - Thames Rvr Mouth (West), Waterford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E2_011-SB
LIS EB Shore - Thames Rvr Mouth (West), Waterford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E2_013 LIS EB Shore - Niantic Bay (East), Waterford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
CAUSE UNKNOWN
CT-E2_014 LIS EB Shore - Niantic Bay (West), East Lyme
Habitat for Marine Fish, Other Aquatic Life and Wildlife
CAUSE UNKNOWN
CT-E2_015 LIS EB Shore - Niantic Bay (Black Pt), East Lyme
Habitat for Marine Fish, Other Aquatic Life and Wildlife
CAUSE UNKNOWN
CT-E3_001 LIS EB Midshore - Stonington Habitat for Marine Fish, Other Aquatic Life and Wildlife
ALGAE
CT-E3_001 LIS EB Midshore - Stonington Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E3_001 LIS EB Midshore - Stonington Recreation ALGAE
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
51
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-E3_001 LIS EB Midshore - Stonington Recreation ESTUARINE BIOASSESSMENTS
CT-E3_005-SB
LIS EB Midshore - Waterford, Thames River
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-E3_005-SB
LIS EB Midshore - Waterford, Thames River
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
CT-E3_006 LIS EB Midshore - Niantic Bay Habitat for Marine Fish, Other Aquatic Life and Wildlife
CAUSE UNKNOWN
CT-W1_001-SB
LIS WB Inner - Bridgeport Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W1_001-SB
LIS WB Inner - Bridgeport Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-W1_001-SB
LIS WB Inner - Bridgeport Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-W1_001-SB
LIS WB Inner - Bridgeport Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) (AQUATIC ECOSYSTEMS)
CT-W1_002-SB
LIS WB Inner - Black Rock Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W1_002-SB
LIS WB Inner - Black Rock Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ESTUARINE BIOASSESSMENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
52
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-W1_002-SB
LIS WB Inner - Black Rock Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-W1_002-SB
LIS WB Inner - Black Rock Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
OIL AND GREASE
CT-W1_002-SB
LIS WB Inner - Black Rock Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCHLORINATED BIPHENYLS (PCBS)
CT-W1_002-SB
LIS WB Inner - Black Rock Harbor, Bridgeport
Habitat for Marine Fish, Other Aquatic Life and Wildlife
POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) (AQUATIC ECOSYSTEMS)
CT-W1_003-SB
LIS WB Inner - Ash Creek, Fairfield Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
CT-W1_003-SB
LIS WB Inner - Ash Creek, Fairfield Habitat for Marine Fish, Other Aquatic Life and Wildlife
GOLD
CT-W1_003-SB
LIS WB Inner - Ash Creek, Fairfield Habitat for Marine Fish, Other Aquatic Life and Wildlife
SILVER
CT-W1_003-SB
LIS WB Inner - Ash Creek, Fairfield Recreation ENTEROCOCCUS
CT-W1_004
LIS WB Inner - Pine Creek, Fairfield Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
53
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-W1_006
LIS WB Inner - Mill River, Fairfield Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-W1_007
LIS WB Inner - Sasco Brook, Westport
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-W1_007
LIS WB Inner - Sasco Brook, Westport Recreation
ENTEROCOCCUS
CT-W1_009
LIS WB Inner - Grays Creek, Westport
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-W1_011
LIS WB Inner - Saugatuck River, Westport Recreation
ENTEROCOCCUS
CT-W1_012-SB
LIS WB Inner - Norwalk Harbor, Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W1_012-SB
LIS WB Inner - Norwalk Harbor, Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
LEAD
CT-W1_012-SB
LIS WB Inner - Norwalk Harbor, Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
MERCURY
CT-W1_012-SB
LIS WB Inner - Norwalk Harbor, Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NITROGEN, TOTAL
CT-W1_012-SB
LIS WB Inner - Norwalk Harbor, Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
54
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-W1_012-SB
LIS WB Inner - Norwalk Harbor, Norwalk
Recreation ENTEROCOCCUS
CT-W1_013-SB
LIS WB Inner - Norwalk Hrbr (MarvinBeach), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W1_013-SB
LIS WB Inner - Norwalk Hrbr (MarvinBeach), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NITROGEN, TOTAL
CT-W1_013-SB
LIS WB Inner - Norwalk Hrbr (MarvinBeach), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-W1_016-SB
LIS WB Inner - Holly Pond, Stamford Commercial Shellfish Harvesting Where Authorized
FECAL COLIFORM
CT-W1_018-SB
LIS WB Inner - Stamford Harbor (Inner), Stamford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W1_018-SB
LIS WB Inner - Stamford Harbor (Inner), Stamford
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-W1_020
LIS WB Inner - Indian Harbor (upper), Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W1_020
LIS WB Inner - Indian Harbor (upper), Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
55
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-W1_021-SB
LIS WB Inner - Greenwich Harbor, Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W1_021-SB
LIS WB Inner - Greenwich Harbor, Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-W2_001
LIS WB Shore - Lordship, Stratford Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-W2_002
LIS WB Shore - Long Beach, Stratford
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-W2_003
LIS WB Shore - Seaside Park Beach, Bridgeport
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-W2_005
LIS WB Shore - Pine Creek Point, Fairfield
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-W2_012
LIS WB Shore - Outer Norwalk Harbor(East), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W2_012
LIS WB Shore - Outer Norwalk Harbor(East), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NITROGEN, TOTAL
CT-W2_012
LIS WB Shore - Outer Norwalk Harbor(East), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)
56
Waterbody Segment ID
Waterbody Name Impaired Designated Use Cause
CT-W2_013
LIS WB Shore - Outer Norwalk Harbor(West), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W2_013
LIS WB Shore - Outer Norwalk Harbor(West), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NITROGEN, TOTAL
CT-W2_013
LIS WB Shore - Outer Norwalk Harbor(West), Norwalk
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-W2_023
LIS WB Shore - Smith Cove, Indian Hrbr, Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W2_023
LIS WB Shore - Smith Cove, Indian Hrbr, Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NUTRIENTS
CT-W2_023
LIS WB Shore - Smith Cove, Indian Hrbr, Greenwich
Shellfish Harvesting for Direct Consumption Where Authorized
FECAL COLIFORM
CT-W3_014
LIS WB Midshore - Outer Captain Harbor, Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
DISSOLVED OXYGEN
CT-W3_014
LIS WB Midshore - Outer Captain Harbor, Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
NITROGEN, TOTAL
CT-W3_014
LIS WB Midshore - Outer Captain Harbor, Greenwich
Habitat for Marine Fish, Other Aquatic Life and Wildlife
ORGANIC ENRICHMENT (SEWAGE) BIOLOGICAL INDICATORS